Re: [ns] Simulating channel Hopping in ns2
> I cannot help with the channel hopping. But to find problems with linked > lists etc. in the C++ part of the code it is always a very good idea to good tip > run ns-2 using valgrind. Simulations will use a lot more time to run, > but every strange or wrong memory access will be recognized. As I explain here, http://tagus.inesc-id.pt/~pestrela/ns2/ns2_debugging3.html "Step 1 - Choosing a simpler scenario that is known to be correct", etc the first step should be to simplify the scenario to make the debug simulations run faster. A common tip that I use extensively is to generate a lot less traffic (lower the rate for UDP; use lower link speeds for TCP). For handling the parameters in the command line, I suggest this http://tagus.inesc-id.pt/~pestrela/ns2/contributed_code.html#_Toc147652228 Pedro Vale Estrela
Re: [ns] Simulating channel Hopping in ns2
Hi, gaurav deshpande schrieb: > Hi all, > > We intend to implement channel hopping using ns2 simulator. Has anyone tried > to implement hopping in ns2? > > Our approach: > > We found that each channel (class WirelessChannel) keeps a linked list of all > nodes listening on that channel. For a mobilenode to hop we wrote code to > dynamically add and remove the node from this list. However, on running ns > we get a segmentation fault. The code we wrote looks something like: > > > MobileNode* n = ; > WirelessChannel new = ; > WirelessChannel current = ; > > new.addNodeToList(n); > current.removeNodeFromList(n); > > > It would be great of someone share thier experience in implementing channel > hopping in ns2. > I cannot help with the channel hopping. But to find problems with linked lists etc. in the C++ part of the code it is always a very good idea to run ns-2 using valgrind. Simulations will use a lot more time to run, but every strange or wrong memory access will be recognized. Daniel.
[ns] Simulating channel Hopping in ns2
Hi all, We intend to implement channel hopping using ns2 simulator. Has anyone tried to implement hopping in ns2? Our approach: We found that each channel (class WirelessChannel) keeps a linked list of all nodes listening on that channel. For a mobilenode to hop we wrote code to dynamically add and remove the node from this list. However, on running ns we get a segmentation fault. The code we wrote looks something like: MobileNode* n = ; WirelessChannel new = ; WirelessChannel current = ; new.addNodeToList(n); current.removeNodeFromList(n); It would be great of someone share thier experience in implementing channel hopping in ns2. Thanks, Gaurav - Sponsored Link Mortgage rates near 39yr lows. $420,000 Mortgage for $1,399/mo - Calculate new house payment
